This probably isn't the right place to post this question but my brother in laws 16' Laramie megacab is been giving him fits. He traded his 3rd gen in for this truck used with around 10k miles last spring. Lucky for him he still has a 2nd gen that is reliable because ever since this fall once the temps got down in the 40 degree range it wont start. He replaced the batteries and checked connections and even took it into the dealer. None of that resolved the issue. When he gets in and pushes the button to let it preheat etc. Everything checks out fine and there are no codes. As soon as he hits his push button. Again everything just shuts down. Wont crank or try to start. So everytime he needs to use his truck or take it somewhere it has to be jumped. Once jumped and he drives it for awhile you would think it would start right back up if turned off for just a few seconds but it wont. It continues to do it and has to be jumped. This has been going on now for just about half of his ownership. He has only put around 3k miles on the truck and it is bone stock. Doesn't even have window tint LOL. Any ideas or help would be greatly appreciated because clearly the dealership isn't helping find the issue.

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